Given:

The expression .

Formula used:

The power of a power property  and the property of exponents

Calculation:

1. Applying the power of a power property to each term in the expression:
   Multiplying these terms together

    

2. Using the property of exponents to combine:

3. Expanding each term:
   • (m+n)(m-n) = m² - n²
   • (n+p)(n-p) = n² - p²
   • (p+m)(p-m) = p² - m²

   Adding these together: m² - n² + n² - p² + p² - m² = 0

4. Therefore, the expression simplifies to:

   x⁰ = 1

Therefore, the value of the given expression is 1.